Data Structures MCQs with Answers
Practice important Data Structures MCQs with answers and explanations.
Multiple Choice Questions
Q41: What does a '0' in the pointer part of a linked list node signify?
- A: It's the first node
- B: It's the middle node
- C: It's pointing to another node
- D: It's the last node
View Answer
D
Q42: What is the main function of the add() method in the linked list?
- A: To delete a node
- B: To find a node
- C: To create and insert a new node
- D: To sort nodes
View Answer
C
Q43: How is a new node created in C++ for a linked list?
- A: Node* newNode = new Node();
- B: int* newNode = new int();
- C: Node newNode;
- D: newNode = new Node(9);
View Answer
A
Q44: What does the get() method in the Node class return?
- A: Memory address of the node
- B: Value stored in the node
- C: Memory address of the next node
- D: Size of the linked list
View Answer
B
Q45: What does the set() method in the Node class do?
- A: Sets the pointer of the next node
- B: Sets the pointer of the previous node
- C: Sets the data value of the node
- D: Initializes the linked list
View Answer
C
Q46: Which pointer is used to connect nodes in a linked list?
- A: Data
- B: Current
- C: Next
- D: Head
View Answer
C
Q47: What type of memory allocation does the new operator perform?
- A: Static memory
- B: Dynamic memory
- C: Automatic memory
- D: Stack memory
View Answer
B
Q48: What does the next() method in the List class do?
- A: Moves to the previous node
- B: Deletes the current node
- C: Moves to the next node
- D: Retrieves the value of the node
View Answer
C
Q49: What is the first step when adding a new node to a linked list?
- A: Assigning it to NULL
- B: Pointing its next pointer to the next node
- C: Deleting the existing node
- D: Setting it as the head node
View Answer
B
Q50: In the List class constructor, what does the headNode->setNext(NULL); statement do?
- A: Initializes the head node
- B: Sets the next node to NULL
- C: Creates a new node
- D: Deletes the head node
View Answer
B